The movie is brutal. Not only for the violence but the kind of life the characters are living. There´s only one character who feels human in the entire movie, the protagonist "Laura Guerrero", and even she is half of the movie in shock acting like a zombie. This is intended and a good way of expressing the way of life of some people who are about to die in any second meanwhile they are killing for a living.
The other great thing about this movie is that half of the time you really dont know what the hell is happening, why is it happening or where is everything going to. A great part of this incomprehensible lethal unknown is intended but I have the feeling that not everything and that´s a shame. I dont know if it´s because I have serious difficulties to understand the mexican accent (I´m spanish myself, my fault!) or if it´s a script or a edition problem but at least a third of everything that I didn´t understand I´m not sure if I was really ment not to.
Anyway this is a violent chaotic ride into the darkest and uglier crime war ever known. As of today the death toll in the Mexican Drug War since 2006 is very close to 55.000 corpses.
This movie doesnt make you cry for the death. It makes you cry for the living mexican people who are enduring this nightmare. And of course, you cry for humanity.

8/10